Jonathan “Jo” Rivera

The latest to get arrested is Jonathan “Jo” Rivera, father to Kailyn Lowry‘s son, Isaac. Jonathan, 19 and his brother Edward, 23, were pulled over by cops last Wednesday in Lopatcong, Penn, when they noticed sparks coming from the undercarriage of their car.

Both men were eventually arrested for being under the influence of marijuana. His elder brother was also charged with driving under the influence of marijuana, driving with a suspended license and driving an unsafe vehicle.

In other Teen Mom news, RadarOnline is reporting today that Amber Portwood is currently experiencing another pregnancy scare.

Amber, 20, has reportedly tested positive at least three times during home pregnancy tests in recent weeks, which has her friends and the potential baby daddy convinced she is pregnant again.

“When Amber tested positive, she decided to go to a local clinic to have a doctor tell her once and for all if she is expecting,” one source close to Amber revealed. “It’s confusing because Amber is telling people that the doctor said the test was negative, even though the home pregnancy tests came back positive, and there were a number of them too.”

This isn’t the first time Amber has experienced a pregnancy scare, with the most recent happening back in December. Back then, Amber denied being pregnant. “I’m working hard to be the best mom to my daughter,” Amber said on December 17, adding: “I have no plans to have more kids anytime soon.”